253214402520 has 64 divisors (see below), whose sum is σ = 761647680000. Its totient is φ = 67345665408.

The previous prime is 253214402491. The next prime is 253214402531. The reversal of 253214402520 is 25204412352.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2738320 + ... + 2829279.

It is an arithmetic number, because the mean of its divisors is an integer number (11900745000).

Almost surely, 2^253214402520 is an apocalyptic number.

253214402520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253214402520 is an abundant number, since it is smaller than the sum of its proper divisors (508433277480).

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

253214402520 is a wasteful number, since it uses less digits than its factorization.

253214402520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5567992 (or 5567988 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 253214402520 its reverse (25204412352), we get a palindrome (278418814872).

The spelling of 253214402520 in words is "two hundred fifty-three billion, two hundred fourteen million, four hundred two thousand, five hundred twenty".