25157465 has 4 divisors (see below), whose sum is σ = 30188964. Its totient is φ = 20125968.

The previous prime is 25157453. The next prime is 25157543. The reversal of 25157465 is 56475152.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11703241 + 13454224 = 3421^2 + 3668^2 .

It is a cyclic number.

It is not a de Polignac number, because 25157465 - 2⁴ = 25157449 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2515742 + ... + 2515751.

It is an arithmetic number, because the mean of its divisors is an integer number (7547241).

Almost surely, 2^25157465 is an apocalyptic number.

It is an amenable number.

25157465 is a deficient number, since it is larger than the sum of its proper divisors (5031499).

25157465 is an equidigital number, since it uses as much as digits as its factorization.

25157465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5031498.

The product of its digits is 42000, while the sum is 35.

The square root of 25157465 is about 5015.7217825553. The cubic root of 25157465 is about 293.0143966647.

The spelling of 25157465 in words is "twenty-five million, one hundred fifty-seven thousand, four hundred sixty-five".