125420420535 has 32 divisors (see below), whose sum is σ = 211261393920. Its totient is φ = 63362217600.

The previous prime is 125420420533. The next prime is 125420420539. The reversal of 125420420535 is 535024024521.

It is a happy number.

It is not a de Polignac number, because 125420420535 - 2¹ = 125420420533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125420420496 and 125420420505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125420420533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2653005 + ... + 2699865.

It is an arithmetic number, because the mean of its divisors is an integer number (6601918560).

Almost surely, 2^125420420535 is an apocalyptic number.

125420420535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125420420535 is a deficient number, since it is larger than the sum of its proper divisors (85840973385).

125420420535 is a wasteful number, since it uses less digits than its factorization.

125420420535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56279.

The product of its (nonzero) digits is 48000, while the sum is 33.

The spelling of 125420420535 in words is "one hundred twenty-five billion, four hundred twenty million, four hundred twenty thousand, five hundred thirty-five".