997078425 has 24 divisors (see below), whose sum is σ = 1884004416. Its totient is φ = 455807040.

The previous prime is 997078421. The next prime is 997078463. The reversal of 997078425 is 524870799.

It is not a de Polignac number, because 997078425 - 2² = 997078421 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (997078421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 949074 + ... + 950123.

It is an arithmetic number, because the mean of its divisors is an integer number (78500184).

Almost surely, 2^997078425 is an apocalyptic number.

It is an amenable number.

997078425 is a deficient number, since it is larger than the sum of its proper divisors (886925991).

997078425 is a wasteful number, since it uses less digits than its factorization.

997078425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1899217 (or 1899212 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 51.

The square root of 997078425 is about 31576.5486556083. The cubic root of 997078425 is about 999.0251917243.

The spelling of 997078425 in words is "nine hundred ninety-seven million, seventy-eight thousand, four hundred twenty-five".