1020641463225 has 96 divisors (see below), whose sum is σ = 1949357316480. Its totient is φ = 523138176000.

The previous prime is 1020641463221. The next prime is 1020641463313. The reversal of 1020641463225 is 5223641460201.

1020641463225 is a `hidden beast` number, since 1 + 0 + 2 + 0 + 6 + 4 + 14 + 632 + 2 + 5 = 666.

It is not a de Polignac number, because 1020641463225 - 2² = 1020641463221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1020641463225.

It is not an unprimeable number, because it can be changed into a prime (1020641463221) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1579005 + ... + 2129445.

It is an arithmetic number, because the mean of its divisors is an integer number (20305805380).

Almost surely, 2^{1020641463225} is an apocalyptic number.

1020641463225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1020641463225 is a deficient number, since it is larger than the sum of its proper divisors (928715853255).

1020641463225 is a wasteful number, since it uses less digits than its factorization.

1020641463225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550568 (or 550557 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 1020641463225 in words is "one trillion, twenty billion, six hundred forty-one million, four hundred sixty-three thousand, two hundred twenty-five".