91401425 has 12 divisors (see below), whose sum is σ = 118266240. Its totient is φ = 69941520.

The previous prime is 91401421. The next prime is 91401439. The reversal of 91401425 is 52410419.

It is not a de Polignac number, because 91401425 - 2² = 91401421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91401394 and 91401403.

It is not an unprimeable number, because it can be changed into a prime (91401421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78905 + ... + 80054.

It is an arithmetic number, because the mean of its divisors is an integer number (9855520).

Almost surely, 2^91401425 is an apocalyptic number.

It is an amenable number.

91401425 is a deficient number, since it is larger than the sum of its proper divisors (26864815).

91401425 is a wasteful number, since it uses less digits than its factorization.

91401425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158992 (or 158987 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 91401425 is about 9560.4092485625. The cubic root of 91401425 is about 450.4545612528.

The spelling of 91401425 in words is "ninety-one million, four hundred one thousand, four hundred twenty-five".