25315378 has 24 divisors (see below), whose sum is σ = 42340284. Its totient is φ = 11341440.

The previous prime is 25315373. The next prime is 25315403. The reversal of 25315378 is 87351352.

It can be written as a sum of positive squares in 2 ways, for example, as 24176889 + 1138489 = 4917^2 + 1067^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25315373) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16950 + ... + 18382.

Almost surely, 2^25315378 is an apocalyptic number.

25315378 is a deficient number, since it is larger than the sum of its proper divisors (17024906).

25315378 is a wasteful number, since it uses less digits than its factorization.

25315378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530 (or 1519 counting only the distinct ones).

The product of its digits is 25200, while the sum is 34.

The square root of 25315378 is about 5031.4389591845. The cubic root of 25315378 is about 293.6262005564.

The spelling of 25315378 in words is "twenty-five million, three hundred fifteen thousand, three hundred seventy-eight".