525402340 has 48 divisors (see below), whose sum is σ = 1219059072. Its totient is φ = 189195776.

The previous prime is 525402329. The next prime is 525402379. The reversal of 525402340 is 43204525.

525402340 = 248² + 249² + ... + 1167².

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, 25774 + ... + 41413.

It is an arithmetic number, because the mean of its divisors is an integer number (25397064).

Almost surely, 2^525402340 is an apocalyptic number.

It is an amenable number.

525402340 is an abundant number, since it is smaller than the sum of its proper divisors (693656732).

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

525402340 is a wasteful number, since it uses less digits than its factorization.

525402340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67236 (or 67234 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 525402340 is about 22921.6565718972. The cubic root of 525402340 is about 806.9203487662.

Adding to 525402340 its reverse (43204525), we get a palindrome (568606865).

The spelling of 525402340 in words is "five hundred twenty-five million, four hundred two thousand, three hundred forty".