252405400351 has 6 divisors (see below), whose sum is σ = 273314723640. Its totient is φ = 232989600168.

The previous prime is 252405400249. The next prime is 252405400363. The reversal of 252405400351 is 153004504252.

It is not a de Polignac number, because 252405400351 - 2¹³ = 252405392159 is a prime.

It is a super-2 number, since 2×252405400351² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252405400391) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 746761371 + ... + 746761708.

It is an arithmetic number, because the mean of its divisors is an integer number (45552453940).

Almost surely, 2^252405400351 is an apocalyptic number.

252405400351 is a deficient number, since it is larger than the sum of its proper divisors (20909323289).

252405400351 is a wasteful number, since it uses less digits than its factorization.

252405400351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493523105 (or 1493523092 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

The spelling of 252405400351 in words is "two hundred fifty-two billion, four hundred five million, four hundred thousand, three hundred fifty-one".