1390265019025 has 27 divisors (see below), whose sum is σ = 1802316670609. Its totient is φ = 1063751210720.

The previous prime is 1390265019019. The next prime is 1390265019037. The reversal of 1390265019025 is 5209105620931.

The square root of 1390265019025 is 1179095.

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

It can be written as a sum of positive squares in 4 ways, for example, as 412871787601 + 977393231424 = 642551^2 + 988632^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1390265019025 is a prime.

It is a super-2 number, since 2×1390265019025² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 135590799 + ... + 135601051.

Almost surely, 2^{1390265019025} is an apocalyptic number.

1390265019025 is the 1179095-th square number.

1390265019025 is the 589548-th centered octagonal number.

It is an amenable number.

1390265019025 is a deficient number, since it is larger than the sum of its proper divisors (412051651584).

1390265019025 is an frugal number, since it uses more digits than its factorization.

1390265019025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20562 (or 10281 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 43.

The spelling of 1390265019025 in words is "one trillion, three hundred ninety billion, two hundred sixty-five million, nineteen thousand, twenty-five".