625659378441 has 8 divisors (see below), whose sum is σ = 845640073440. Its totient is φ = 411392467872.

The previous prime is 625659378439. The next prime is 625659378457. The reversal of 625659378441 is 144873956526.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 625659378441 - 2¹ = 625659378439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (625659378401) 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, 1428445851 + ... + 1428446288.

It is an arithmetic number, because the mean of its divisors is an integer number (105705009180).

Almost surely, 2^625659378441 is an apocalyptic number.

It is an amenable number.

625659378441 is a deficient number, since it is larger than the sum of its proper divisors (219980694999).

625659378441 is a wasteful number, since it uses less digits than its factorization.

625659378441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2856892215.

The product of its digits is 43545600, while the sum is 60.

The spelling of 625659378441 in words is "six hundred twenty-five billion, six hundred fifty-nine million, three hundred seventy-eight thousand, four hundred forty-one".