1025495400402 has 40 divisors (see below), whose sum is σ = 2506766538672. Its totient is φ = 310756181400.

The previous prime is 1025495400383. The next prime is 1025495400403. The reversal of 1025495400402 is 2040045945201.

It is a happy number.

1025495400402 is a `hidden beast` number, since 10 + 25 + 49 + 540 + 0 + 40 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (1025495400403) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 287735424 + ... + 287738987.

Almost surely, 2^{1025495400402} is an apocalyptic number.

1025495400402 is an abundant number, since it is smaller than the sum of its proper divisors (1481271138270).

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

1025495400402 is a wasteful number, since it uses less digits than its factorization.

1025495400402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575474436 (or 575474427 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 1025495400402 in words is "one trillion, twenty-five billion, four hundred ninety-five million, four hundred thousand, four hundred two".