1615630452025 has 24 divisors (see below), whose sum is σ = 2025127458200. Its totient is φ = 1278514368000.

The previous prime is 1615630452017. The next prime is 1615630452061. The reversal of 1615630452025 is 5202540365161.

It can be written as a sum of positive squares in 12 ways, for example, as 252845048569 + 1362785403456 = 502837^2 + 1167384^2 .

It is not a de Polignac number, because 1615630452025 - 2³ = 1615630452017 is a prime.

It is a super-2 number, since 2×1615630452025² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1144471 + ... + 2130979.

Almost surely, 2^{1615630452025} is an apocalyptic number.

It is an amenable number.

1615630452025 is a deficient number, since it is larger than the sum of its proper divisors (409497006175).

1615630452025 is a wasteful number, since it uses less digits than its factorization.

1615630452025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987229 (or 987224 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 40.

The spelling of 1615630452025 in words is "one trillion, six hundred fifteen billion, six hundred thirty million, four hundred fifty-two thousand, twenty-five".