251352002432 has 16 divisors (see below), whose sum is σ = 500740317600. Its totient is φ = 125676001152.

The previous prime is 251352002401. The next prime is 251352002471. The reversal of 251352002432 is 234200253152.

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×251352002432² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 251352002395 and 251352002404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 981843632 + ... + 981843887.

It is an arithmetic number, because the mean of its divisors is an integer number (31296269850).

Almost surely, 2^251352002432 is an apocalyptic number.

It is an amenable number.

251352002432 is a deficient number, since it is larger than the sum of its proper divisors (249388315168).

251352002432 is an equidigital number, since it uses as much as digits as its factorization.

251352002432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1963687533 (or 1963687521 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 251352002432 its reverse (234200253152), we get a palindrome (485552255584).

The spelling of 251352002432 in words is "two hundred fifty-one billion, three hundred fifty-two million, two thousand, four hundred thirty-two".