525603492081 has 40 divisors (see below), whose sum is σ = 808963144704. Its totient is φ = 339911752320.

The previous prime is 525603491981. The next prime is 525603492133. The reversal of 525603492081 is 180294306525.

525603492081 is a `hidden beast` number, since 5 + 2 + 560 + 3 + 4 + 9 + 2 + 0 + 81 = 666.

It is not a de Polignac number, because 525603492081 - 2¹⁷ = 525603361009 is a prime.

It is a super-2 number, since 2×525603492081² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (525603490081) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 180705 + ... + 1041086.

Almost surely, 2^525603492081 is an apocalyptic number.

It is an amenable number.

525603492081 is a deficient number, since it is larger than the sum of its proper divisors (283359652623).

525603492081 is a wasteful number, since it uses less digits than its factorization.

525603492081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221963 (or 1221954 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 525603492081 in words is "five hundred twenty-five billion, six hundred three million, four hundred ninety-two thousand, eighty-one".