25379691 has 24 divisors (see below), whose sum is σ = 36530544. Its totient is φ = 15667200.

The previous prime is 25379681. The next prime is 25379699. The reversal of 25379691 is 19697352.

It is not a de Polignac number, because 25379691 - 2⁵ = 25379659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25379699) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63091 + ... + 63491.

It is an arithmetic number, because the mean of its divisors is an integer number (1522106).

Almost surely, 2^25379691 is an apocalyptic number.

25379691 is a deficient number, since it is larger than the sum of its proper divisors (11150853).

25379691 is a wasteful number, since it uses less digits than its factorization.

25379691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511 (or 494 counting only the distinct ones).

The product of its digits is 102060, while the sum is 42.

The square root of 25379691 is about 5037.8260192269. The cubic root of 25379691 is about 293.8746399695.

The spelling of 25379691 in words is "twenty-five million, three hundred seventy-nine thousand, six hundred ninety-one".