25524017380 has 48 divisors (see below), whose sum is σ = 54350215920. Its totient is φ = 10067714048.

The previous prime is 25524017261. The next prime is 25524017381. The reversal of 25524017380 is 8371042552.

It can be written as a sum of positive squares in 8 ways, for example, as 3351020544 + 22172996836 = 57888^2 + 148906^2 .

It is not an unprimeable number, because it can be changed into a prime (25524017381) 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, 416556 + ... + 473884.

It is an arithmetic number, because the mean of its divisors is an integer number (1132296165).

Almost surely, 2^25524017380 is an apocalyptic number.

25524017380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25524017380 is an abundant number, since it is smaller than the sum of its proper divisors (28826198540).

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

25524017380 is a wasteful number, since it uses less digits than its factorization.

25524017380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57648 (or 57646 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The spelling of 25524017380 in words is "twenty-five billion, five hundred twenty-four million, seventeen thousand, three hundred eighty".