925572421 has 6 divisors (see below), whose sum is σ = 927369650.
Its totient is φ = 923778288.
The previous prime is 925572413. The next prime is 925572449. The reversal of 925572421 is 124275529.
It can be written as a sum of positive squares in 3 ways, for example, as 44076321 + 881496100 = 6639^2 + 29690^2
It is not a de Polignac number, because 925572421 - 23 = 925572413 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (925572121) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 596755 + ... + 598303.
It is a 515-hyperperfect number.
Almost surely, 2925572421 is an apocalyptic number.
It is an amenable number.
925572421 is a deficient number, since it is larger than the sum of its proper divisors (1797229).
925572421 is an frugal number, since it uses more digits than its factorization.
925572421 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3095 (or 2322 counting only the distinct ones).
The product of its digits is 50400, while the sum is 37.
The square root of 925572421 is about 30423.2217393227.
The cubic root of 925572421 is about 974.5485250547.
The spelling of 925572421 in words is "nine hundred twenty-five million, five hundred seventy-two thousand, four hundred twenty-one".