1025965590 has 32 divisors (see below), whose sum is σ = 2651727456. Its totient is φ = 252545280.

The previous prime is 1025965583. The next prime is 1025965609. The reversal of 1025965590 is 955695201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1314951 + ... + 1315730.

It is an arithmetic number, because the mean of its divisors is an integer number (82866483).

Almost surely, 2^1025965590 is an apocalyptic number.

1025965590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1025965590 is an abundant number, since it is smaller than the sum of its proper divisors (1625761866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1025965590 is a wasteful number, since it uses less digits than its factorization.

1025965590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2630704.

The product of its (nonzero) digits is 121500, while the sum is 42.

The square root of 1025965590 is about 32030.6976196273. The cubic root of 1025965590 is about 1008.5813465166.

The spelling of 1025965590 in words is "one billion, twenty-five million, nine hundred sixty-five thousand, five hundred ninety".