1025501015 has 48 divisors (see below), whose sum is σ = 1552180224. Its totient is φ = 636672960.

The previous prime is 1025501011. The next prime is 1025501021. The reversal of 1025501015 is 5101055201.

It is a happy number.

It is not a de Polignac number, because 1025501015 - 2² = 1025501011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025501011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1960544 + ... + 1961066.

It is an arithmetic number, because the mean of its divisors is an integer number (32337088).

Almost surely, 2^1025501015 is an apocalyptic number.

1025501015 is a deficient number, since it is larger than the sum of its proper divisors (526679209).

1025501015 is a wasteful number, since it uses less digits than its factorization.

1025501015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020 (or 1009 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 20.

The square root of 1025501015 is about 32023.4447709799. Note that the first 3 decimals coincide. The cubic root of 1025501015 is about 1008.4290891616.

Adding to 1025501015 its reverse (5101055201), we get a palindrome (6126556216).

The spelling of 1025501015 in words is "one billion, twenty-five million, five hundred one thousand, fifteen".