425723961 has 48 divisors (see below), whose sum is σ = 650836032. Its totient is φ = 245877120.

The previous prime is 425723957. The next prime is 425724011. The reversal of 425723961 is 169327524.

425723961 = 124² + 125² + ... + 1085².

It is not a de Polignac number, because 425723961 - 2² = 425723957 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (425723761) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1386570 + ... + 1386876.

It is an arithmetic number, because the mean of its divisors is an integer number (13559084).

Almost surely, 2^425723961 is an apocalyptic number.

It is an amenable number.

425723961 is a deficient number, since it is larger than the sum of its proper divisors (225112071).

425723961 is a wasteful number, since it uses less digits than its factorization.

425723961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422 (or 391 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The square root of 425723961 is about 20633.0792903047. The cubic root of 425723961 is about 752.2739642585.

The spelling of 425723961 in words is "four hundred twenty-five million, seven hundred twenty-three thousand, nine hundred sixty-one".