25715475 has 84 divisors (see below), whose sum is σ = 51231096. Its totient is φ = 12752640.

The previous prime is 25715467. The next prime is 25715477. The reversal of 25715475 is 57451752.

It is not a de Polignac number, because 25715475 - 2³ = 25715467 is a prime.

It is a super-2 number, since 2×25715475² = 1322571308951250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25715477) by changing a digit.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 309784 + ... + 309866.

It is an arithmetic number, because the mean of its divisors is an integer number (609894).

Almost surely, 2^25715475 is an apocalyptic number.

25715475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25715475 is a deficient number, since it is larger than the sum of its proper divisors (25515621).

25715475 is an equidigital number, since it uses as much as digits as its factorization.

25715475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 108 counting only the distinct ones).

The product of its digits is 49000, while the sum is 36.

The square root of 25715475 is about 5071.0427921681. The cubic root of 25715475 is about 295.1649943619.

The spelling of 25715475 in words is "twenty-five million, seven hundred fifteen thousand, four hundred seventy-five".