2516691925 has 12 divisors (see below), whose sum is σ = 3404398176. Its totient is φ = 1830321200.

The previous prime is 2516691913. The next prime is 2516691943. The reversal of 2516691925 is 5291966152.

It is not a de Polignac number, because 2516691925 - 2⁹ = 2516691413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4575529 + ... + 4576078.

It is an arithmetic number, because the mean of its divisors is an integer number (283699848).

Almost surely, 2^2516691925 is an apocalyptic number.

2516691925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2516691925 is a deficient number, since it is larger than the sum of its proper divisors (887706251).

2516691925 is a wasteful number, since it uses less digits than its factorization.

2516691925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9151628 (or 9151623 counting only the distinct ones).

The product of its digits is 291600, while the sum is 46.

The square root of 2516691925 is about 50166.6415559184. The cubic root of 2516691925 is about 1360.2227008792. Note that the first 3 decimals are identical.

The spelling of 2516691925 in words is "two billion, five hundred sixteen million, six hundred ninety-one thousand, nine hundred twenty-five".