105402020525 has 12 divisors (see below), whose sum is σ = 130723960512. Its totient is φ = 84305193840.

The previous prime is 105402020519. The next prime is 105402020527. The reversal of 105402020525 is 525020204501.

It is not a de Polignac number, because 105402020525 - 2¹² = 105402016429 is a prime.

It is a super-2 number, since 2×105402020525² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105402020494 and 105402020503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105402020527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 278807 + ... + 537156.

It is an arithmetic number, because the mean of its divisors is an integer number (10893663376).

Almost surely, 2^105402020525 is an apocalyptic number.

It is an amenable number.

105402020525 is a deficient number, since it is larger than the sum of its proper divisors (25321939987).

105402020525 is an equidigital number, since it uses as much as digits as its factorization.

105402020525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821140 (or 821135 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

The spelling of 105402020525 in words is "one hundred five billion, four hundred two million, twenty thousand, five hundred twenty-five".