1025622780 has 96 divisors (see below), whose sum is σ = 3534472704. Its totient is φ = 216393984.

The previous prime is 1025622757. The next prime is 1025622833. The reversal of 1025622780 is 872265201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88462 + ... + 99381.

It is an arithmetic number, because the mean of its divisors is an integer number (36817424).

Almost surely, 2^1025622780 is an apocalyptic number.

1025622780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1025622780 is an abundant number, since it is smaller than the sum of its proper divisors (2508849924).

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

1025622780 is a wasteful number, since it uses less digits than its factorization.

1025622780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187875 (or 187873 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 1025622780 is about 32025.3458997713. The cubic root of 1025622780 is about 1008.4690002251.

Adding to 1025622780 its reverse (872265201), we get a palindrome (1897887981).

The spelling of 1025622780 in words is "one billion, twenty-five million, six hundred twenty-two thousand, seven hundred eighty".