1022625253 has 12 divisors (see below), whose sum is σ = 1117160100. Its totient is φ = 935590656.

The previous prime is 1022625223. The next prime is 1022625257. The reversal of 1022625253 is 3525262201.

It can be written as a sum of positive squares in 6 ways, for example, as 786634209 + 235991044 = 28047^2 + 15362^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1022625253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022625257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7678 + ... + 45871.

It is an arithmetic number, because the mean of its divisors is an integer number (93096675).

Almost surely, 2^1022625253 is an apocalyptic number.

1022625253 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1022625253 is a deficient number, since it is larger than the sum of its proper divisors (94534847).

1022625253 is a wasteful number, since it uses less digits than its factorization.

1022625253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53688 (or 53675 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 1022625253 is about 31978.5123637733. The cubic root of 1022625253 is about 1007.4855773169.

Adding to 1022625253 its reverse (3525262201), we get a palindrome (4547887454).

The spelling of 1022625253 in words is "one billion, twenty-two million, six hundred twenty-five thousand, two hundred fifty-three".