1262690453025 has 45 divisors (see below), whose sum is σ = 2339032874563. Its totient is φ = 673407939600.

The previous prime is 1262690452981. The next prime is 1262690453039. The reversal of 1262690453025 is 5203540962621.

The square root of 1262690453025 is 1123695.

It is a perfect power (a square), and thus also a powerful number.

1262690453025 is a `hidden beast` number, since 1 + 2 + 6 + 2 + 6 + 90 + 4 + 530 + 25 = 666.

It can be written as a sum of positive squares in only one way, i.e., 454568563089 + 808121889936 = 674217^2 + 898956^2 .

It is a tau number, because it is divible by the number of its divisors (45).

It is not a de Polignac number, because 1262690453025 - 2¹³ = 1262690444833 is a prime.

It is a super-3 number, since 3×1262690453025³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 50553790 + ... + 50578760.

Almost surely, 2^{1262690453025} is an apocalyptic number.

1262690453025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1262690453025 is the 1123695-th square number.

1262690453025 is the 561848-th centered octagonal number.

It is an amenable number.

1262690453025 is a deficient number, since it is larger than the sum of its proper divisors (1076342421538).

1262690453025 is an frugal number, since it uses more digits than its factorization.

1262690453025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49964 (or 24979 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 1262690453025 in words is "one trillion, two hundred sixty-two billion, six hundred ninety million, four hundred fifty-three thousand, twenty-five".