25139361 has 8 divisors (see below), whose sum is σ = 36097600. Its totient is φ = 15470352.

The previous prime is 25139353. The next prime is 25139383. The reversal of 25139361 is 16393152.

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

It is not a de Polignac number, because 25139361 - 2³ = 25139353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25139321) 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, 322261 + ... + 322338.

It is an arithmetic number, because the mean of its divisors is an integer number (4512200).

Almost surely, 2^25139361 is an apocalyptic number.

It is an amenable number.

25139361 is a deficient number, since it is larger than the sum of its proper divisors (10958239).

25139361 is a wasteful number, since it uses less digits than its factorization.

25139361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644615.

The product of its digits is 4860, while the sum is 30.

The square root of 25139361 is about 5013.9167324558. The cubic root of 25139361 is about 292.9440927394.

The spelling of 25139361 in words is "twenty-five million, one hundred thirty-nine thousand, three hundred sixty-one".