25465139 has 8 divisors (see below), whose sum is σ = 29889888. Its totient is φ = 21237120.

The previous prime is 25465129. The next prime is 25465157. The reversal of 25465139 is 93156452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25465139 - 2²⁴ = 8687923 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25465099 and 25465108.

It is not an unprimeable number, because it can be changed into a prime (25465109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48902 + ... + 49419.

It is an arithmetic number, because the mean of its divisors is an integer number (3736236).

Almost surely, 2^25465139 is an apocalyptic number.

25465139 is a deficient number, since it is larger than the sum of its proper divisors (4424749).

25465139 is an equidigital number, since it uses as much as digits as its factorization.

25465139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98365.

The product of its digits is 32400, while the sum is 35.

The square root of 25465139 is about 5046.2995353031. The cubic root of 25465139 is about 294.2040749195.

The spelling of 25465139 in words is "twenty-five million, four hundred sixty-five thousand, one hundred thirty-nine".