25532251512520 has 32 divisors (see below), whose sum is σ = 57860857756800. Its totient is φ = 10139426497728.

The previous prime is 25532251512499. The next prime is 25532251512569. The reversal of 25532251512520 is 2521515223552.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2296060224 + ... + 2296071343.

It is an arithmetic number, because the mean of its divisors is an integer number (1808151804900).

Almost surely, 2^{25532251512520} is an apocalyptic number.

25532251512520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25532251512520 is an abundant number, since it is smaller than the sum of its proper divisors (32328606244280).

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

25532251512520 is a wasteful number, since it uses less digits than its factorization.

25532251512520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4592131717 (or 4592131713 counting only the distinct ones).

The product of its (nonzero) digits is 300000, while the sum is 40.

The spelling of 25532251512520 in words is "twenty-five trillion, five hundred thirty-two billion, two hundred fifty-one million, five hundred twelve thousand, five hundred twenty".