1025392564 has 12 divisors (see below), whose sum is σ = 2050785184. Its totient is φ = 439453944.

The previous prime is 1025392559. The next prime is 1025392567. The reversal of 1025392564 is 4652935201.

1025392564 is an admirable number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025392567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18310554 + ... + 18310609.

Almost surely, 2^1025392564 is an apocalyptic number.

1025392564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1025392564 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1025392564 is a wasteful number, since it uses less digits than its factorization.

1025392564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36621174 (or 36621172 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 1025392564 is about 32021.7514199333. The cubic root of 1025392564 is about 1008.3935393841.

It can be divided in two parts, 102 and 5392564, that multiplied together give a triangular number (550041528 = T₃₃₁₆₇).

The spelling of 1025392564 in words is "one billion, twenty-five million, three hundred ninety-two thousand, five hundred sixty-four".