1025631202 has 4 divisors (see below), whose sum is σ = 1538446806. Its totient is φ = 512815600.

The previous prime is 1025631193. The next prime is 1025631209. The reversal of 1025631202 is 2021365201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2021365201 = 34883 ⋅57947.

It can be written as a sum of positive squares in only one way, i.e., 557384881 + 468246321 = 23609^2 + 21639^2 .

It is not an unprimeable number, because it can be changed into a prime (1025631209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256407799 + ... + 256407802.

Almost surely, 2^1025631202 is an apocalyptic number.

1025631202 is a deficient number, since it is larger than the sum of its proper divisors (512815604).

1025631202 is an equidigital number, since it uses as much as digits as its factorization.

1025631202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512815603.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1025631202 is about 32025.4773891038. The cubic root of 1025631202 is about 1008.4717605976.

Adding to 1025631202 its reverse (2021365201), we get a palindrome (3046996403).

The spelling of 1025631202 in words is "one billion, twenty-five million, six hundred thirty-one thousand, two hundred two".