91951925 has 24 divisors (see below), whose sum is σ = 129262560. Its totient is φ = 64324800.

The previous prime is 91951879. The next prime is 91951933. The reversal of 91951925 is 52915919.

It is not a de Polignac number, because 91951925 - 2⁸ = 91951669 is a prime.

It is a super-2 number, since 2×91951925² = 16910313022411250, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 1271 + ... + 13620.

It is an arithmetic number, because the mean of its divisors is an integer number (5385940).

Almost surely, 2^91951925 is an apocalyptic number.

91951925 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

91951925 is a deficient number, since it is larger than the sum of its proper divisors (37310635).

91951925 is a wasteful number, since it uses less digits than its factorization.

91951925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14933 (or 14928 counting only the distinct ones).

The product of its digits is 36450, while the sum is 41.

The square root of 91951925 is about 9589.1566365348. The cubic root of 91951925 is about 451.3570966099.

The spelling of 91951925 in words is "ninety-one million, nine hundred fifty-one thousand, nine hundred twenty-five".