1552453700625 has 135 divisors (see below), whose sum is σ = 2886353290821. Its totient is φ = 803803392000.

The previous prime is 1552453700591. The next prime is 1552453700639. The reversal of 1552453700625 is 5260073542551.

It is a happy number.

The square root of 1552453700625 is 1245975.

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

1552453700625 is a `hidden beast` number, since 1 + 5 + 52 + 4 + 537 + 0 + 0 + 62 + 5 = 666.

It can be written as a sum of positive squares in 22 ways, for example, as 1431107371521 + 121346329104 = 1196289^2 + 348348^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1552453700625 is a prime.

It is a super-2 number, since 2×1552453700625² (a number of 25 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 3457580401 + ... + 3457580849.

Almost surely, 2^{1552453700625} is an apocalyptic number.

1552453700625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1552453700625 is the 1245975-th square number.

1552453700625 is the 622988-th centered octagonal number.

It is an amenable number.

1552453700625 is a deficient number, since it is larger than the sum of its proper divisors (1333899590196).

1552453700625 is an frugal number, since it uses more digits than its factorization.

1552453700625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 1260000, while the sum is 45.

The spelling of 1552453700625 in words is "one trillion, five hundred fifty-two billion, four hundred fifty-three million, seven hundred thousand, six hundred twenty-five".