421625526 has 16 divisors (see below), whose sum is σ = 963715584. Its totient is φ = 120464424.

The previous prime is 421625521. The next prime is 421625531. The reversal of 421625526 is 625526124.

It is an interprime number because it is at equal distance from previous prime (421625521) and next prime (421625531).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421625521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5019310 + ... + 5019393.

It is an arithmetic number, because the mean of its divisors is an integer number (60232224).

Almost surely, 2^421625526 is an apocalyptic number.

421625526 is an abundant number, since it is smaller than the sum of its proper divisors (542090058).

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

421625526 is a wasteful number, since it uses less digits than its factorization.

421625526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10038715.

The product of its digits is 28800, while the sum is 33.

The square root of 421625526 is about 20533.5220067089. The cubic root of 421625526 is about 749.8521344052.

The spelling of 421625526 in words is "four hundred twenty-one million, six hundred twenty-five thousand, five hundred twenty-six".