525356661423 has 16 divisors (see below), whose sum is σ = 764219753856. Its totient is φ = 318371055840.

The previous prime is 525356661409. The next prime is 525356661437. The reversal of 525356661423 is 324166653525.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (525356661409) and next prime (525356661437).

It is not a de Polignac number, because 525356661423 - 2⁴ = 525356661407 is a prime.

It is a super-3 number, since 3×525356661423³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525356661023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273265 + ... + 1060842.

It is an arithmetic number, because the mean of its divisors is an integer number (47763734616).

Almost surely, 2^525356661423 is an apocalyptic number.

525356661423 is a deficient number, since it is larger than the sum of its proper divisors (238863092433).

525356661423 is a wasteful number, since it uses less digits than its factorization.

525356661423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346054.

The product of its digits is 3888000, while the sum is 48.

The spelling of 525356661423 in words is "five hundred twenty-five billion, three hundred fifty-six million, six hundred sixty-one thousand, four hundred twenty-three".