25515070 has 32 divisors (see below), whose sum is σ = 54302400. Its totient is φ = 8445696.

The previous prime is 25515059. The next prime is 25515071. The reversal of 25515070 is 7051552.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25515071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4255 + ... + 8314.

It is an arithmetic number, because the mean of its divisors is an integer number (1696950).

Almost surely, 2^25515070 is an apocalyptic number.

25515070 is an abundant number, since it is smaller than the sum of its proper divisors (28787330).

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

25515070 is a wasteful number, since it uses less digits than its factorization.

25515070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12612.

The product of its (nonzero) digits is 1750, while the sum is 25.

The square root of 25515070 is about 5051.2444011352. The cubic root of 25515070 is about 294.3962371403.

The spelling of 25515070 in words is "twenty-five million, five hundred fifteen thousand, seventy".