67621475025 has 336 divisors, whose sum is σ = 145632928896. Its totient is φ = 30837749760.

The previous prime is 67621475023. The next prime is 67621475069. The reversal of 67621475025 is 52057412676.

It is not a de Polignac number, because 67621475025 - 2¹ = 67621475023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (67621475023) by changing a digit.

It is a polite number, since it can be written in 335 ways as a sum of consecutive naturals, for example, 414855594 + ... + 414855756.

It is an arithmetic number, because the mean of its divisors is an integer number (433431336).

Almost surely, 2^67621475025 is an apocalyptic number.

67621475025 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

67621475025 is an abundant number, since it is smaller than the sum of its proper divisors (78011453871).

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

67621475025 is a wasteful number, since it uses less digits than its factorization.

67621475025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The spelling of 67621475025 in words is "sixty-seven billion, six hundred twenty-one million, four hundred seventy-five thousand, twenty-five".