25775975 has 12 divisors (see below), whose sum is σ = 32643744. Its totient is φ = 20181120.

The previous prime is 25775969. The next prime is 25775987. The reversal of 25775975 is 57957752.

It is not a de Polignac number, because 25775975 - 2¹⁰ = 25774951 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

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, 9794 + ... + 12143.

It is an arithmetic number, because the mean of its divisors is an integer number (2720312).

Almost surely, 2^25775975 is an apocalyptic number.

25775975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25775975 is a deficient number, since it is larger than the sum of its proper divisors (6867769).

25775975 is a wasteful number, since it uses less digits than its factorization.

25775975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21994 (or 21989 counting only the distinct ones).

The product of its digits is 771750, while the sum is 47.

The square root of 25775975 is about 5077.0045302324. The cubic root of 25775975 is about 295.3962882447.

The spelling of 25775975 in words is "twenty-five million, seven hundred seventy-five thousand, nine hundred seventy-five".