25620732 has 48 divisors (see below), whose sum is σ = 67530400. Its totient is φ = 8398080.

The previous prime is 25620719. The next prime is 25620739. The reversal of 25620732 is 23702652.

25620732 is a `hidden beast` number, since 2 + 5 + 620 + 7 + 32 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 25620696 and 25620705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25620739) 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, 4644 + ... + 8532.

Almost surely, 2^25620732 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25620732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33765200).

25620732 is an abundant number, since it is smaller than the sum of its proper divisors (41909668).

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

25620732 is a wasteful number, since it uses less digits than its factorization.

25620732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3963 (or 3955 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 25620732 is about 5061.6926022824. The cubic root of 25620732 is about 294.8020581541.

The spelling of 25620732 in words is "twenty-five million, six hundred twenty thousand, seven hundred thirty-two".