1025197880 has 32 divisors (see below), whose sum is σ = 2636223840. Its totient is φ = 351496320.

The previous prime is 1025197867. The next prime is 1025197889. The reversal of 1025197880 is 887915201.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025197889) 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, 1830431 + ... + 1830990.

It is an arithmetic number, because the mean of its divisors is an integer number (82381995).

Almost surely, 2^1025197880 is an apocalyptic number.

1025197880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1025197880 is an abundant number, since it is smaller than the sum of its proper divisors (1611025960).

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

1025197880 is a wasteful number, since it uses less digits than its factorization.

1025197880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3661439 (or 3661435 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 41.

The square root of 1025197880 is about 32018.7114044273. The cubic root of 1025197880 is about 1008.3297165061.

The spelling of 1025197880 in words is "one billion, twenty-five million, one hundred ninety-seven thousand, eight hundred eighty".