1025718879 has 16 divisors (see below), whose sum is σ = 1448393472. Its totient is φ = 644316288.

The previous prime is 1025718877. The next prime is 1025718899. The reversal of 1025718879 is 9788175201.

It is a happy number.

It is not a de Polignac number, because 1025718879 - 2¹ = 1025718877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025718877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106314 + ... + 115559.

It is an arithmetic number, because the mean of its divisors is an integer number (90524592).

Almost surely, 2^1025718879 is an apocalyptic number.

1025718879 is a deficient number, since it is larger than the sum of its proper divisors (422674593).

1025718879 is a wasteful number, since it uses less digits than its factorization.

1025718879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221966.

The product of its (nonzero) digits is 282240, while the sum is 48.

The square root of 1025718879 is about 32026.8462231297. The cubic root of 1025718879 is about 1008.5004964820.

The spelling of 1025718879 in words is "one billion, twenty-five million, seven hundred eighteen thousand, eight hundred seventy-nine".