25152390 has 64 divisors (see below), whose sum is σ = 70617600. Its totient is φ = 6352992.

The previous prime is 25152373. The next prime is 25152419. The reversal of 25152390 is 9325152.

25152390 is a `hidden beast` number, since 2 + 51 + 523 + 90 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2679 + ... + 7581.

It is an arithmetic number, because the mean of its divisors is an integer number (1103400).

Almost surely, 2^25152390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25152390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35308800).

25152390 is an abundant number, since it is smaller than the sum of its proper divisors (45465210).

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

25152390 is a wasteful number, since it uses less digits than its factorization.

25152390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4938 (or 4932 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 25152390 is about 5015.2158477976. The cubic root of 25152390 is about 292.9946921348.

The spelling of 25152390 in words is "twenty-five million, one hundred fifty-two thousand, three hundred ninety".