25097478 has 16 divisors (see below), whose sum is σ = 57365760. Its totient is φ = 7170696.

The previous prime is 25097477. The next prime is 25097497. The reversal of 25097478 is 87479052.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 597559 = 25097478 / (2 + 5 + 0 + 9 + 7 + 4 + 7 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25097477) 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, 298738 + ... + 298821.

It is an arithmetic number, because the mean of its divisors is an integer number (3585360).

Almost surely, 2^25097478 is an apocalyptic number.

25097478 is an abundant number, since it is smaller than the sum of its proper divisors (32268282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25097478 is a wasteful number, since it uses less digits than its factorization.

25097478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597571.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 25097478 is about 5009.7383165191. The cubic root of 25097478 is about 292.7813174872.

The spelling of 25097478 in words is "twenty-five million, ninety-seven thousand, four hundred seventy-eight".