91242925 has 12 divisors (see below), whose sum is σ = 116200276. Its totient is φ = 71020800.

The previous prime is 91242913. The next prime is 91242937. The reversal of 91242925 is 52924219.

It is an interprime number because it is at equal distance from previous prime (91242913) and next prime (91242937).

It can be written as a sum of positive squares in 6 ways, for example, as 1713481 + 89529444 = 1309^2 + 9462^2 .

It is not a de Polignac number, because 91242925 - 2¹⁹ = 90718637 is a prime.

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, 48396 + ... + 50245.

Almost surely, 2^91242925 is an apocalyptic number.

It is an amenable number.

91242925 is a deficient number, since it is larger than the sum of its proper divisors (24957351).

91242925 is a wasteful number, since it uses less digits than its factorization.

91242925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98688 (or 98683 counting only the distinct ones).

The product of its digits is 12960, while the sum is 34.

The square root of 91242925 is about 9552.1162576677. The cubic root of 91242925 is about 450.1940315516.

The spelling of 91242925 in words is "ninety-one million, two hundred forty-two thousand, nine hundred twenty-five".