425829557 has 4 divisors (see below), whose sum is σ = 425878080. Its totient is φ = 425781036.

The previous prime is 425829511. The next prime is 425829571. The reversal of 425829557 is 755928524.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 425829557 - 2¹⁴ = 425813173 is a prime.

It is a super-2 number, since 2×425829557² = 362661623229632498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425822557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7007 + ... + 30012.

It is an arithmetic number, because the mean of its divisors is an integer number (106469520).

Almost surely, 2^425829557 is an apocalyptic number.

It is an amenable number.

425829557 is a deficient number, since it is larger than the sum of its proper divisors (48523).

425829557 is a wasteful number, since it uses less digits than its factorization.

425829557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48522.

The product of its digits is 1008000, while the sum is 47.

The square root of 425829557 is about 20635.6380322974. The cubic root of 425829557 is about 752.3361567916.

The spelling of 425829557 in words is "four hundred twenty-five million, eight hundred twenty-nine thousand, five hundred fifty-seven".